GMJ 6035 central heating 6

Selective space heating in a dwelling can be described as the heating of

• All rooms to a comfortable design temperature

• All rooms to a low background temperature

• One room to a comfortable design temperature

• Some rooms in a dwelling as needed by the occupier

Unwanted reverse circulation in central heating pipework can be controlled by installing which one of the following?

• A non-return valve

• A room thermostat

• An injector tee

• A pressure relief valve

The main risk of damage to customer property when removing a back boiler is created by

• Fire

• Soot

• Toxic smell

• Vibration

Which one of the following can be used to form the open vent and cold feed pipe connections to a fully pumped heating system?

• Automatic air vent

• Air separator

• Manifold

• Venturi

Which one of the following components can be used in a mini-bore heating system to distribute circulated water through the main primary flow and return pipework from a central point to individual radiators?

• Hopper head

• Distributor head

• Manifold

• Injector tee

A solid fuel heating appliance in which combustion takes place in an enclosed glass fronted chamber is called

• An open fire

• A room heater

• An independent boiler

• A cooker

The oil in a pressure-jet burner is forced through which one of the following components during the combustion process?

• A nozzle

• A venturi

• An injector tee

• A jet stream

Which one of the following describes a gas-fired boiler that takes its air for combustion directly from the outside air?

• Open-flued

• Room-sealed

• Conventional flued

• Back boiler

Copper pipework in contact with a chase in concrete block must be

• Wrapped in fireproof material

• Fitted with trace heating tape

• Protected against corrosion

• Fitted with a conductivity strip

What type of heat emitter is shown in the following photograph?

• Panel radiator

• Column radiator

• Kick-space radiator

• Low surface temperature radiators